The failure is that repository trust becomes a permission grant for tool execution, not just code loading. When approval mode can be inherited from workspace files, the control moves from per-action confirmation to a one-time workspace decision, which means a normal trust click can silently expand the assistant’s authority for the entire session.
Why load-time approval mode turns trust into authority
When approval mode can be set by repository content at load time, the trust decision stops being about loading code safely and starts acting like a standing grant for tool use. That changes the security meaning of a normal trust click: the user is no longer just accepting source code, they may be authorising a broader execution context for the whole session.
The practical break is scope. A control that should be checked per action becomes a workspace-level assumption, so the assistant can inherit more power than the user intended. That is especially dangerous when the approval state is not obvious in the UI, because the user believes they approved a repository, not a downstream tool or action surface.
This is the same class of failure that appears when developers mix configuration and authority. If a file in the repository can alter how the assistant behaves after trust is granted, then the repository is participating in access control, not just content delivery. The safer mental model is that repository trust must not be able to rewrite the boundary between “read this code” and “may execute tools on my behalf.”
Where the authority boundary gets crossed
The core issue is that inherited approval creates ambient authority. Once the workspace is trusted, the assistant may treat that trust as permission to act more broadly than the user can inspect or remember. The result is a hidden privilege expansion path, where the most important decision happens implicitly at load time rather than explicitly at the moment of action.
This matters most when approvals are used to gate operations that can reach secrets, external systems, or destructive commands. If the load-time mode can bias the assistant toward automatic approval, then an attacker only needs a trusted repository path, a poisoned workspace file, or a compromised contribution channel to convert ordinary trust into tool execution authority.
In practice, the control failure is not “the assistant loaded code.” It is “the assistant loaded code and also adopted a permission posture that changes what it can do next.” That is why the trust boundary must be designed around explicit user intent, not around repository metadata that can silently shape execution policy.
What a safe implementation has to preserve
A safe design keeps approval mode separate from repository contents that may be fetched, modified, or inherited during load. The user should be able to trust a workspace without that trust becoming a hidden override on later tool decisions. If the product allows policy inheritance, that inheritance needs to be visible, narrow, and reviewable before any privileged action occurs.
It also needs a clear distinction between read access and action authority. A repository can be safe to inspect but unsafe to let drive tool calls, shell operations, or external requests. The control goal is to preserve per-action friction for anything that can change state outside the repo, even when the repo itself is already trusted.
For identity and access design, the important question is not whether the assistant is “allowed in the workspace.” It is whether the repository can influence the assistant’s effective privileges after the trust decision. If the answer is yes, then the trust model is too coarse and the blast radius is larger than it appears.
Risk and Threat Considerations
Load-time approval inheritance creates a trust-confusion problem that can be abused for unintended execution. A repository that can alter approval mode can turn a legitimate workspace trust event into a privilege escalation path for tool access, especially if the user cannot easily see which permissions were activated.
Failure mechanism: An attacker gets code or configuration into a repository that is later trusted, and the inherited approval mode quietly expands the assistant’s authority from a single reviewable action into broader session-wide execution rights.
Impact: The attacker gains a path to sensitive tool use, data exposure, or command execution without requiring a separate, conspicuous approval step for each privileged action.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
OWASP Agentic AI Top 10 and OWASP Non-Human Identity Top 10 address the attack and risk surface, while NIST SP 800-53 Rev 5 sets the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Agentic AI Top 10 | ASI03 — Identity & Privilege Abuse | Load-time approval inheritance changes agent authority and privilege boundaries. |
| Recommendation — Keep tool authority separate from workspace trust to prevent hidden privilege expansion. | ||
| OWASP Non-Human Identity Top 10 | NHI-05 — Overprivileged NHI | The issue is session-wide authority growth beyond intended task scope. |
| Recommendation — Constrain non-human execution paths so repository trust cannot widen privileges. | ||
| NIST SP 800-53 Rev 5 | AC-6 — Least Privilege | Approval inheritance can expand effective access beyond what is necessary. |
| CM-6 — Configuration Settings | Approval mode inherited from workspace files is a configuration-driven control surface. | |
| IA-5 — Authenticator Management | When load-time trust affects execution, credential and token exposure becomes material. | |
| Recommendation — Limit assistant actions to the minimum privilege needed for each operation. Lock down configuration sources that can alter execution or approval behaviour. Rotate or revoke exposed credentials if workspace trust could have expanded access. | ||
Practitioner Guidance
What to verify: Confirm that approval state is not sourced from mutable repository content in a way that changes action authority after load. The repository may influence behaviour, but it should not be able to silently redefine the permission model once trust has been granted.
Decision rule: If the trust decision can widen tool access beyond what the user explicitly intended, treat that as a control-design defect rather than a convenience feature. Per-action confirmation should remain the default for anything that can invoke tools, touch secrets, or reach external systems.
Common mistake: Teams often test whether the repository is trusted, but not whether the trust decision itself can be repurposed into broader execution permission. That gap is where silent authority expansion happens.
Practitioner takeaway: The control boundary must sit on the action, not on the workspace. If a repository can change approval mode at load time, then trust has become a policy input, and that is too much power to leave implicit.